Read config(Having nested configuration)file using bash-CodePudding

I have a .config file, which has data like:


category1 {

  Key1="value1"

  Key2="value2"

}

category2 {

  Key1="value1"

  Key2="value2"

}

How do I read these values in bash?

I want to access these values in my bash script.

CodePudding user response：

This is not json, so I am guessing you want to export environment variables to current shell. Then, assuming your file is 'some-config.conf' AND it is not nested crazy or anything:

shopt -s extglob
while read -r; do 
    #$REPLY is the default variable, assign it as you wish
    if [[ "${REPLY}" =~ [{}] ]]
    then
        #ignore or use '!' within if test
        :
    else 
        #process the line but remove leading spaces first
        declare -x "${REPLY## ([ ])}"
    fi
    #While reading line by line, ignore empty lines by 'grep -v'
done < <(cat some-config.conf | grep -Ev "^\s*$" )

#at this point you can do `echo ${Key1}`

if you want to export them to current shell, save it as 'parse.sh' and call:

. parse.sh

CodePudding user response：

Based on your sample input, awk and it's matching operator ~ can extract the value of a key:

$ key="Key1"

$ awk -F= -v k=$key '$0 ~ k {print $NF}' config
 "value1"